Microchip

NX9548CMTR
Demoboard NX9548

Topology: Buck
Input Voltage (min.): 4.50 V
Input Voltage (max.): 24.00 V
Output 1: 24.00 V / 9.000 A

Description

The NX9548 is buck switching converter in multi chip module designed for step down DC to DC converter in portable applications. It is optimized to convert single supply up to 24V bus voltage to as low as 0.75V output voltage. The output current can be up to 9A.It can be selected to operate in synchronous mode or non-synchronous mode to improve the efficiency at light load. Constant on time control provides fast response, good line regulation and nearly constant frequency under wide voltage input range. Over current protection and FB UVLO followed by latch feature.Other features includes: internal boost schottky diode, 5V gate drive capability, power good indicator, over current protection, over voltage protection and adaptive dead band control. NX9548 is available in 5x5 MCM package.

Characteristics

  • Internal Bootstrap Schottky Diode
  • Ultrasonic Mode Operation Available
  • Bus Voltage Operation From 4.5V to 24V
  • Less Than 1uA Shutdown Current with Enable Low
  • Excellent Dynamic Response with Constant On Time Control
  • Selectable Between Synchronous CCM Mode and Diode Emulation Mode to Improve Efficiency at Light Load
  • Programmable Switching Frequency
  • Current Limit and FB UVLO with Latch Off
  • Over Voltage Protection with Latch Off

Products

  Order Code SPEC Product series L
(µH)
IR
(A)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
Material Version C
(nF)
Tol. C VR
(V (DC))
Bauform H
(mm)
Keramiktyp Technische Artikelnummer Endurance
(h)
Betriebstemperatur IRIPPLE
(mA)
ILeak
(µA)
DF
(%)
P
(mm)
Ø D
(mm)
L
(mm)
Samples
744311100 PDF WE-HCI SMT Flat Wire High Current Inductor 1 15 0.78 19 4.6 85 Superflux SMT
885012007063 PDF WCAP-CSGP MLCCs 50 V(DC) 1 ±5% 50 0805 0.8 NP0 Class I NP00805102J050DFCT10000
885012007061 PDF WCAP-CSGP MLCCs 50 V(DC) 470 ±5% 50 0805 0.8 NP0 Class I NP00805471J050DFCT10000
860020272005 PDF WCAP-ATG5 Aluminum Electrolytic Capacitors 100 10 ATDC110101M010DSPA3B000 2000 -40 °C up to +105 °C 105 10 17 2 5 11
885012107005 PDF WCAP-CSGP MLCCs 6.3 V(DC) 22 ±20% 6.3 0805 1.25 X5R Class II X5R0805226M6R3DFCT10000 15
885012109014 PDF WCAP-CSGP MLCCs 25 V(DC) 22 ±20% 25 1210 2.5 X5R Class II X5R1210226M025DFCT10000 10
885012207002 PDF WCAP-CSGP MLCCs 6.3 V(DC) 4.7 ±10% 6.3 0805 1.25 X7R Class II X7R0805475K6R3DFCT10000 15
885012207045 PDF WCAP-CSGP MLCCs 16 V(DC) 100 ±10% 16 0805 0.8 X7R Class II X7R0805104K016DFCT10000 3.5
885012207026 PDF WCAP-CSGP MLCCs 10 V(DC) 10 ±10% 10 0805 1.25 X7R Class II X7R0805106K010DFCT10000 10
885012207072 PDF WCAP-CSGP MLCCs 25 V(DC) 100 ±10% 25 0805 0.8 X7R Class II X7R0805104K025DFCT10000 3.5
885012207078 PDF WCAP-CSGP MLCCs 25 V(DC) 1 ±10% 25 0805 1.25 X7R Class II X7R0805105K025DFCT10000 5